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Technics SL-1800

Direct Drive Turntable with pitch control - mkI Servo control (1977-78) - mkII Quartz locked (1979-81)

Description

The SL-1800 features full Technics uncompromising direct drive performance in a simple, straightforward package.

The centre of this sleek, attractive unit is its highly accurate One Chip IC controlled servo drive motor.

This direct drive motor, which incorporates all of the design features of all Technics fine DD motors, is controlled by the unique BFG system which utilises the back electromotive force induced by the rotor in the stator field coils to monitor the platter speed.

The frequency generator in the SL-1800 uses the waveform obtained as its reference and it is compared with the standard calibration frequency from the reference oscillator.

In this way, a signal to correct the speed can be sent instantly whenever needed to change the motor drive current in order to maintain precise platter speed.

Specifications

Type: manual turntable

Drive method: direct drive

Control method: servo control (mk1), quartz synthesizer (mk2)

Motor: DC motor

Platter: 330mm (mk1), 332mm 2kg (mk2) aluminium alloy die-cast

Speeds: 33 and 45rpm

Pitch control: 10% (mk1), 12% (mk2)

Wow and flutter: 0.025% WRMS

Rumble: -73dB (mk1), -78dB (mk2)

Tonearm: universal static balance type

Effective length: 230mm

Overhang: 15mm

Effective mass: 12g (mk2)

Dimensions: 125 x 453 x 369mm (mk1), 149 x 453 x 399mm (mk2)

Weight: 8.5kg (mk1), 9.8kg (mk2)

Downloads

instruction/owners manual (en)

mkII brochure (en)

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Technics SL-1800 / SL1800 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are copyright the Vinyl Engine and provided under strict licence. Reproduction for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Technics.